Help modelling simple beam design

[Tmanzz]

Hello,

I'm having some errors designing a simple beam and wanted to know what i am doing wrong.

When i go to the design opton and do a member verification, it comes up with an error message shown below.

This suggests that My=0 but i know My is not 0 so i guess i may have some settings wrong.

Can someone kindly have a look at the attached model and explain what i'm doing wrong?

Thanks

[Simau · Accepted solution]

@Tmanzz 

You are doing nothing wrong

In your case, the governing effort is the shear force Vz, not the bending  moment.

If you try with a 9m span, you'll get a buckling lateral check.